Water Pressure vs Water Temp gauge

[Blue197320]

muddy maybe u shouldnt listen to me because i cant get mine running right at all.. its coming off the boat.. ive had it with that supposed "turn key" engine.

[Fr. Frank]

...after the poppet opens (about 3k rpm) the pressure should drop to about 8-12 psi and stay there all the way thru WOT

Mine ('92 Merc 150 carb) drops from about 38-40 psi to about 16-20 psi at between 2800 - 3400 rpm when the poppet opens and then stays pretty constant to WOT. If your pressure drops below 8 psi at any time you have a problem.

[Blue197320]

mine is an 84 2.4L. so maybe thats the difference? yours is a 2.5L i beleive

[doug7488]

Isn't the water pressure somewhat lower in the 2.5's as opposed to the 2.4's?

[Blue197320]

ya got me on that one.. muddy have u been to www.screamandfly.com yet??

[reelclassic]

evan you get it going yet?

[Blue197320]

i forgot ur other name doesnt work. ive been sending u pm's.
but no its worse than before after i got the water pump changed by a pro.

[reelclassic]

damn well i think it may be time for another motor I'll keep my eye out for you!! Yeah I dont know why my other log in is not working???

[Blue197320]

well i wanted to know if u have a 20 or 25 inch shaft on ur motor? i think my problem is in the water pump base or something because after i had it professionally replaced i still have water coming up out of where the shift shaft is. and now i got water coming out of only one of my above water exhausts. i think i gotta take it all apart again like it was when u saw it...

[muddywater]

Yeah Blue, I have been to S&F. I did some reading there and at Iboats which confirmed what you guys said. If I really had some $$ to throw at it, I might try to hop up the engine while I was at it, but I have been throwing cash at the boat like it is going out of style and I haven't even really gotten started. My transom is mulch and my deck isn't far behind. I just wanted to take it out a couple times before I really chop it up.

-Muddy